core:sys/info AVX-512 CPU Features #4376
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Adds AVX-512 feature detection to
core:sys/info.Per a discussion in #package-dev in the Discord server, this adds each individual feature flag of AVX-512 (18 total) as individual entries in
CPU_Feature, for a current total of 36CPU_Featurevalues.XCR0 bits to check were sourced from the Intel Software Developer Manual, volume 1, section 15.2.
CPUID feature flag bits were sourced from the Intel Instruction Set Extensions document, section 1.4, table 1-3.
Note that there is an apparently an issue where this detection may report a false negative on Darwin systems; see a GitHub issue on the Go compiler. This issue is not addressed by these changes.